From: Jason-JH.Lin Date: Wed, 9 Oct 2024 03:46:43 +0000 (+0800) Subject: drm/mediatek: ovl: Refine ignore_pixel_alpha comment and placement X-Git-Tag: microblaze-v6.16~782^2~1^2~8 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=28fbc3293f034f3d148bb0bc433114db493657b8;p=linux-2.6-microblaze.git drm/mediatek: ovl: Refine ignore_pixel_alpha comment and placement Refine the comment for ignore_pixel_alpha flag and move it to if(state->fb) statement to make it less conditional. Signed-off-by: Jason-JH.Lin Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/dri-devel/patch/20241009034646.13143-3-jason-jh.lin@mediatek.com/ Signed-off-by: Chun-Kuang Hu --- diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 047cd1796a51..0d3a9c5e8d26 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -481,16 +481,16 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, */ if (blend_mode || state->base.fb->format->has_alpha) con |= OVL_CON_AEN; - } - /* CONST_BLD must be enabled for XRGB formats although the alpha channel - * can be ignored, or OVL will still read the value from memory. - * For RGB888 related formats, whether CONST_BLD is enabled or not won't - * affect the result. Therefore we use !has_alpha as the condition. - */ - if ((state->base.fb && !state->base.fb->format->has_alpha) || - blend_mode == DRM_MODE_BLEND_PIXEL_NONE) - ignore_pixel_alpha = OVL_CONST_BLEND; + /* + * Although the alpha channel can be ignored, CONST_BLD must be enabled + * for XRGB format, otherwise OVL will still read the value from memory. + * For RGB888 related formats, whether CONST_BLD is enabled or not won't + * affect the result. Therefore we use !has_alpha as the condition. + */ + if (blend_mode == DRM_MODE_BLEND_PIXEL_NONE || !state->base.fb->format->has_alpha) + ignore_pixel_alpha = OVL_CONST_BLEND; + } if (pending->rotation & DRM_MODE_REFLECT_Y) { con |= OVL_CON_VIRT_FLIP;